Finding the Fourth Proportional to 10,434.26, 14,399.56 and 5,718.72

Step by Step Solution

1. Step 1: Write the proportion equation
   10,434.26 : 14,399.56 = 5,718.72 : x
2. Step 2: Convert to fraction form
   10,434.26/14,399.56 = 5,718.72/x
3. Step 3: Cross multiply
   10,434.26x = 14,399.56 × 5,718.72
4. Step 4: Simplify right side
   10,434.26x = 82,347,051.76
5. Step 5: Solve for x
   x = 82,347,051.76/10,434.26
6. Step 6: Final answer
   x = 7,891.99